Re: Right version of jdbc

May be I have to copy PostGis draiver also to tomcat/lib ?

Raivo

On Sat, Sep 30, 2023 at 8:01 AM Raivo Rebane <raivore55(at)gmail(dot)com> wrote:

> Hi,
> I copied the postgres driver to Tomcat/lib.
> PS C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib> dir post*
> Directory: C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib
> Mode LastWriteTime Length Name
> ---- ------------- ------ ----
> -a---- 28.09.2023 14:40 1081604 postgresql-42.6.0.jar
> but Tomcat remains to give error -
> java.sql.SQLException: No suitable driver found for
> jdbc:postgresql://localhost:5432/mushroom_database
> I am using Postgres 15. May be I have to use more older one ?
>
>
> Raivo
>
> On Sat, Sep 30, 2023 at 6:32 AM Craig McIlwee <craigm(at)vt(dot)edu> wrote:
>
>> > for some reason the postgresql jar is not in the classpath.
>>
>> This is due to the way that Tomcat loads drivers, which is documented at
>> [1]. In short, the JDBC driver should be placed in the tomcat/lib
>> directory and removed from the application's WEB-INF/lib directory. After
>> doing that, I was able to get past the "No suitable driver" exception.
>>
>> OP, you should read that entire page, and in particular the portion at
>> [2]. By registering a "Resource" with Tomcat, you can let it manage a
>> connection pool for you (if you aren't already using something like
>> PgBouncer or pgpool) and, if registered at the container level, in the
>> future you can share that pool across all of your web applications in the
>> container.
>>
>> [1]
>> https://tomcat.apache.org/tomcat-9.0-doc/jndi-datasource-examples-howto.html#DriverManager,_the_service_provider_mechanism_and_memory_leaks
>> [2]
>> https://tomcat.apache.org/tomcat-9.0-doc/jndi-datasource-examples-howto.html#PostgreSQL
>>
>> Craig
>>
>>>